Research On The Motion Function Of Shapewear Based On Gait

With the progress of society and the development of the times,people pay more and more attention to the pursuit of beauty.Health becomes more and more concerned.Most women maintain her body size through exercise or dress,and so on.The survey found that most of the women did not wear sports bras and chose to wear shapewear,because the shapewear not only had certain protection for the breasts,abdomen and buttocks,but also met the aesthetic needs of women.Therefore,it is of great practical value to study the motility of body sculpting under gait.The shapewear made by company A were selected as samples for the study.The subjects are 20 healthy women aging between 24 and 47,wearing bras of cup A,B and C.3D dynamic capture and subjective evaluation were used to research the movement function of the model body underwear.The SPSS statistical analysis software is used to analyze the experimental data.It is concluded that the shapewear’s effects to women breast,abdomens,buttocks,and the influences to the gait balance.This study provides theoretical support for the follow-up study of the shapewear and other sports underwear;and provides a reference for the design of shapewear and improves its sports functionality.The effect of the shapewear on the breast,abdomen and buttocks in static state.The relative displacement is used to to explain the effect of shapewear on breast,abdomen and buttocks before and after the dress,the results showed that the corsets have the effects of improving breast position and carrying buttock,the thickness of the shapewear caused that its belly in effect is not obvious.Test on a treadmill with three kinds of moving states,walking at 4km/h,running at 6km/h and 8km/h.Through the time difference and dynamic relative displacement,the degree of movement of the breast and hip relative to the trunk at different speeds of movement is measured.The results showed that the changing rule of the relative displacement is:as the speed increases.Compared to the undressed,the relative displacement and relative time difference of the breast can be effectively reduced.The relative displacement difference of the breast is 16.4-54.5mm before the dress,which is about 6.6—23.7mm after the dress.The relative displacement difference of the pre-dressing buttocks is 8.2—17.4mm,and after the dress is 3.1—15.1mm.The relative motion of the breast is significantly greater than that of the buttocks according to the relative displacement difference.The reason is that the structure and center of gravity of the breast and buttocks are different.The relative time difference of the cup of A is significantly less than the cups of B and C,the relative time difference of B cup is the greatest,C cup is slightly smaller than the B cup in the same state of motion.In three kinds of motion states:the relative time difference of the breast which dressed bra with the cup of A is about 0-0.02s,and the cups of B and C are about 0.02-0.05s.Subjective evaluation was used to obtain the comfort of different sizes of breasts,different sports states and before and after the dress.The smaller the cup type and velocity of movement,the more comfortable the breast.The comfort of the abdomen and buttocks is better than that of the breasts during exercise.A Logistic regression model with dependent variable as comfort and independent variable for bra cup type,motion state and dressing state was established.The comfort of bresst was predicted.Through analysis of gait found that the step width of the standard body weight and the overweight body were significantly increased after wearing the shapewear,which increased by about 2.6mm and 6.6mm respectively.There was no obvious change in the step length of the standard body weight.The overweight body decreased obviously,which decreased by about 6.0mm.There was no significant change in the gait cycle of standard weight.The overweight body had a significant change,which increased by about 0.09s.So wearing shapewear affect the gait balance of the human body.The balance ability was decreased,which the overweight body size greater than the standard weight.The structure of the shapewear was optimized,breast position was higher increased by the optimized samples.During the exercise,the relative displacement and the time difference of the breasts are reduced relative to that before optimization.The control of the relative movement of breast is increased by the optimized shapewear.